EP0759623B1 - Dispositif de stockage d'assemblages de combustible nucléaire et râtelier de stockage correspondant - Google Patents

Dispositif de stockage d'assemblages de combustible nucléaire et râtelier de stockage correspondant Download PDF

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Publication number
EP0759623B1
EP0759623B1 EP96810541A EP96810541A EP0759623B1 EP 0759623 B1 EP0759623 B1 EP 0759623B1 EP 96810541 A EP96810541 A EP 96810541A EP 96810541 A EP96810541 A EP 96810541A EP 0759623 B1 EP0759623 B1 EP 0759623B1
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EP
European Patent Office
Prior art keywords
storage
fuel elements
channels
supported
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96810541A
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German (de)
English (en)
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EP0759623A1 (fr
Inventor
Stanislaw Kielbowicz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CCI AG
Original Assignee
CCI AG
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Publication date
Application filed by CCI AG filed Critical CCI AG
Priority to EP96810541A priority Critical patent/EP0759623B1/fr
Priority to ES96810541T priority patent/ES2143744T3/es
Publication of EP0759623A1 publication Critical patent/EP0759623A1/fr
Application granted granted Critical
Publication of EP0759623B1 publication Critical patent/EP0759623B1/fr
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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G21C19/06—Magazines for holding fuel elements or control elements
    • G21C19/07—Storage racks; Storage pools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • the invention relates to a bearing arrangement for storage nuclear fuel elements according to the generic term of the Claim 1 and a storage rack for a such arrangement.
  • Bearing arrangement of the type mentioned are those for inclusion of the fuel elements through certain vertical channels overlapping, crossing Metal strips formed.
  • the metal strips are between a support structure in the form of a lower one Grid plate and an upper grid plate arranged, which grid plates per opening for insertion or Have locking of the fuel assemblies.
  • the known Bearing arrangement are the fuel assemblies on the bottom Supported grid plate, which is thus by weight of the channels, and additionally by the weight of the Fuel elements is loaded.
  • the known bearing arrangement therefore requires a relatively complex, highly resilient Construction of the lower grid plate.
  • a storage rack known from US-A-4,042,828 contains one lower, one middle and one upper Lattice frames and several for holding fuel elements certain channels, each in a single in the Storage rack to be used housing are formed.
  • the Housings are in openings of the three lattice frames guided and with over the upper and the lower Grid frame protruding upwards or downwards arranged.
  • the fuel assemblies are each one inside the lower end of each housing arranged support on the floor of the storage pool supported, the housing depending on the relevant Support supported or on the upper lattice frame are hung.
  • the lower grid frame is corresponding the weight of the fuel assemblies and the weight of the channels relieved.
  • the known bearing arrangement with three Lattice frames for guiding the ones held in them laterally Housing the channels requires a relative complex construction of the storage rack.
  • the invention has for its object a improved bearing arrangement as well as one with little Labor and cost to manufacture storage rack of initially mentioned in a compared to previous Designs simplified, light and at the same time to create stable construction.
  • the bearing arrangement according to the invention ensures that the fuel assemblies from each other and from the nature, e.g. of any deformations, the support structure is inserted independently into the channels and without additional load on the storage rack Support pieces can be supported on the floor.
  • On essential advantage of the embodiment according to the invention is also that in the support structure arranged support pieces, which any, if necessary different fuel element height settings allow, with the stop parts formed on them each at a distance from an upper part of the Support structure can be positioned, the corresponding vertical relative movements of the support pieces and the Support structure allows. This means e.g.
  • the embodiment according to claim 2 allows simple Way an increase in the storage rack and thus one appropriate enlargement, if necessary a Doubling, storage capacity.
  • the upper fuel elements in any height distances from the lower fuel assemblies are stored over intermediate pieces, which according to Claim 5 vertically movable relative to the storage rack supported on the lower fuel assemblies or, according to Claim 6, be arranged fixed in the storage rack can.
  • the intermediate pieces can be arranged loosely or, according to Claim 7, each connected to one of the fuel assemblies his.
  • a storage rack for the storage arrangement according to the invention is the subject of claim 9. This version allows precise centering and guidance of the Weight of the fuel assemblies, from which according to claim 10 is a partial number as Supports for the support structure and thus for that entire storage rack can be used.
  • the embodiment according to claim 11 allows one of the Condition of the bottom of the storage tank independent, precise positioning and leveling of the Support structure in a predetermined, e.g. the Circulation of the coolant favoring high altitude.
  • the 1 contains one in one Storage pool usable storage rack 1 with a lower Support structure 2, an upper support structure 3 and several, arranged side by side between them vertical channels 4 for receiving nuclear Fuel elements 5.
  • the support and support structures 2 and 3, which can be of any design, are shown in the drawing is simplified in the form of a base plate or a cover plate.
  • the channels 4 are bounded by walls 6, which are arranged by crosswise Sheets made of a neutron absorbing material, e.g. a boron alloy.
  • the walls 6 can be made extending over the entire height of the storage rack 1 Sheet metal parts or, e.g. from the above DE-OS 29 30 237 known, from one another, sheet metal strips which can be placed on one another.
  • the Support structure 2 can, as shown, on it attached foot parts 7 on the bottom of the no further illustrated storage pool be supported.
  • the Storage pool which several, arranged side by side Storage racks can contain 1 extends over the Height of the storage rack 1 and is with a Coolant, e.g. Water, filled that as well Shielding against radiation from the fuel elements is used.
  • the fuel elements 5 are each with a side play in openings 8 and 9 of the Support and support structures 2 and 3 arranged and in Distance from the lower support structure 2, from this independently, each with a foot section 11 immediately supported the bottom of the storage pool and with a Head section 12 in the upper support structure 3 vertically flexibly guided. Which according to the weight of the Fuel elements 5 relieved support structure 2 needs thus only as a support arrangement for the storage rack to be dimensioned and can be in a corresponding lightweight construction.
  • Execution 2 essentially corresponds to that of Fig. 1, with the difference that the fuel elements 5 with their feet 11 each via a support 14 on the Bottom of the storage pool are supported.
  • the support pieces 14 are shown in the support structure 2 vertically movable and each with one over the Support structure 2 protruding headboard executed which a stop part 23 is formed, which in one Distance A from the support structure 2 can be positioned.
  • Fuel elements 5a is provided.
  • the upper fuel elements 5a with their foot parts 11 directly on the head parts 12 of the lower Fuel elements 5 supported, which with positioning parts can be provided for the foot parts 11.
  • Corresponding can also the weight of the top fuel assemblies 5a over the fuel assemblies 5 without additional load on the Storage rack 1 on the floor of the storage pool 1 be transmitted.
  • Fuel elements 5a on the lower fuel elements 5 Intermediate pieces 16 supported, each in the form of a corresponding channel 4a relative to the support structure 2a of the upper storage rack 1a vertically movable arranged spacer executed and on the after Head portions 12 of the fuel elements 5 protruding above are put on. Accordingly, the weight of the Fuel elements 5a via the intermediate pieces 16 to the lower fuel elements 5 and each directly on this transfer the floor of the storage pool.
  • the spacers 16 can, as shown, have through openings 15 be carried out which the circulation of the coolant ensure within channels 4 and 4a.
  • the Intermediate pieces 16 can also be used as with the fuel assemblies 5 - or 5a fixed or detachably connected positioning parts be trained.
  • the upper storage rack is also la executed with a height H1, which is smaller than the height H of the lower storage rack 1 and which therefore only a fraction of the length of the fuel elements 5a corresponds.
  • the upper fuel elements 5a each in a surrounding Shell 19 made of a neutron absorbing material arranged.
  • the sleeves 19 are each with the relevant Fuel element 5a firmly connected and shaped so that it with the fuel elements 5a each in one of the upper ones Channels 4a insertable in the vertical direction Form installation unit.
  • the Walls 6a of the channels 4a made of a weldable material exist and essentially as a guide arrangement for through the fuel assemblies 5a and the casings 19th formed installation units to be formed.
  • the Intermediate pieces 16 can be designed as supporting parts which the top fuel assemblies 5a on the Support structure 2a of the upper storage rack 1a are supported so that the weight of the top Fuel elements 5a, regardless of the lower ones Fuel elements 5, via the channel walls 6 to the Relieved weight of the lower fuel assemblies 5 Support structure 2 of the lower storage rack 1 is transmitted.
  • the support structure 2 only through those introduced via the channel walls 6 Supporting forces, and thus appropriately cheap, claimed.
  • the support structure 2 can therefore, although by the Weight of the upper fuel assemblies 5a partially loaded, also in a correspondingly light design be carried out.
  • the upper fuel elements 5a can also be opened directly the support structure 2a of the upper storage rack 1a be supported. Execution is also possible at of the upper fuel elements 5a - directly or over corresponding spacers 16 - on the top Support structure 3 of the lower storage rack 1 are supported, whereby the support structure 2a of the upper storage rack la in a corresponding light, simple construction can be carried out
  • the Support structure 2 as a the lower end portions 6 ' of the channel walls 6 connecting the channels 4 dividing grating 17 executed by sheet metal can be formed from a weldable material.
  • the End sections 6 ' can also be made of sheet metal weldable material be formed, which with the Sheets of neutron-absorbing material in alignment arranged and with the grating 17 to one dimensionally stable support structure for the channels 4 connected are.
  • the one in FIG Form of a plate shown support structure 3 by the upper end portions of the channel walls 6 may be formed.
  • the grating 17 contains at least a part of the Channels 4 at least one guide arrangement 18 each one of the vertically movable support pieces 14 or forms such a guide arrangement.
  • the guide assemblies 18 can be through bushings or, as shown in Fig. 8, by two pairs each arranged crosswise, over several channels 4 themselves extending support plates 20 of the grating 17 be formed, which with each other and with the sheets of End section 6 'or with the support structure 2 can be welded. Most supports 14 are free in the guide arrangements 18 in the vertical direction slidably guided.
  • Support pieces as shown support pieces 14 ', are coupled to the grating 17 via suspension means 22, about which the lower support structure 2 and thus that whole storage rack 1 on these support pieces 14 ' are supported.
  • Threaded bushings can be provided, in which each with a corresponding threaded support members 14 ' are adjustable in height and lockable. How can be seen in particular from FIGS. 6 and 7 the support pieces 14 and 14 'with stop parts 23rd be executed, each above the grate 17 in a distance A or B are adjustable, which corresponding vertical relative movements between the Grating 17 and the support pieces 14 guaranteed and a transfer of the weight of the to the Support pieces 14 supported fuel assemblies 5 on the Grid 17 prevented.
  • the distances A are chosen so that they are a small, Predefinable movement of the storage rack 1, e.g. in the Earthquake event, allow without loading the storage rack 1 by the weight of the fuel elements. At a seismic load is also a stabilization of the storage rack 1 achievable because the shoulder-like Stop parts 23 of the fuel elements 5 loaded supports 14, the vertical movements the grating 17 to a distance A corresponding Limit size and thus a tilting movement of the Storage rack 1 or storage racks 1 and 1a counteract.
  • the distances B are used to adjust the Altitude and for leveling the support structure 2, regardless of the nature of the soil of the Storage basin.
  • a storage rack 1 arranged in a storage pool contains several vertical channels 4 for recording Fuel elements 5.
  • the channels 4, the walls 6 through Sheets made of a neutron absorbing material are formed on one on the bottom of the Storage basin supported by the weight of the fuel elements 5 relieved support structure 2 arranged.
  • the Fuel elements 5 are each at a distance from itself Support structure 2 on the bottom of the pool supported. Accordingly, the storage rack 1 in one advantageously lightweight design. At the same time is an optimal, even distribution of the Construction loads achieved on the floor of the storage pool. Due to the relief of the support structure 2 from Weight of the fuel elements 5 and the uniform Load distribution on the floor of the storage pool are favorable conditions for building a second, upper Layer of fuel elements to be stored, whereby the storage capacity can be increased significantly.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (11)

  1. Agencement de stockage pour le stockage d'éléments de combustible nucléaires, avec au moins un bâti de stockage (1) pouvant être disposé dans un bassin de stockage qui comporte plusieurs canaux verticaux (4) disposés les uns à côté des autres, prévus pour recevoir les éléments de combustible (5), dont les parois (6) sont formés par des tôles en un matériau absorbant les neutrons qui sont disposés sur une construction d'appui (2) s'appuyant sur le fond du bassin de stockage qui est réalisé comme agencement de support pour les canaux (4), caractérisé en ce que les éléments de combustible (5) sont disposés à un certain écart de la construction d'appui (2) et s'appuient, indépendamment de celle-ci, chacun par une pièce de support (14, 14') sur le fond du bassin de stockage, et en ce que les pièces de support (14, 14') au moins d'un nombre partiel des éléments de combustible (5) sont disposées dans la construction d'appui (2) d'une manière mobile dans la direction verticale et sont réalisées chacune avec une partie de butée (23) associée à une partie supérieure de la construction d'appui (2) qui, dans la position de montage, présente un écart vertical (A respectivement B) relativement à cette partie supérieure.
  2. Agencement de stockage selon la revendication 1, caractérisé en ce qu'il est prévu pour la réception d'éléments de combustible supérieurs (5a) à stocker dans une deuxième position en hauteur un bâti de stockage supérieur (1a) pouvant être placé sur la partie supérieure d'un bâti de stockage inférieur (1), avec des canaux supérieurs (4a) alignés avec les canaux (4) du bâti de stockage inférieur (1).
  3. Agencement de stockage selon la revendication 2, caractérisé en ce que les éléments de combustible supérieurs (5a) prennent appui chacun sur l'élément de combustible inférieur (5) disposé dans le canal inférieur correspondant (4).
  4. Agencement de stockage selon la revendication 2, caractérisé en ce que les éléments de combustible supérieurs (5a) prennent appui chacun sur une pièce intermédiaire (16) disposée dans le bâti de stockage supérieur (1a).
  5. Agencement de stockage selon la revendication 4, caractérisé en ce que la pièce intermédiaire (16) est réalisée sous forme de pièce d'écartement mobile dans la direction verticale et prend appui sur l'élément de combustible (5) disposé dans le canal correspondant (4) du bâti de stockage inférieur (1).
  6. Agencement de stockage selon la revendication 4, caractérisé en ce que la pièce intermédiaire (16) est réalisée sous forme de partie de support et prend appui sur une construction d'appui (2a) réalisée au bâti de stockage supérieur (1a).
  7. Agencement de stockage selon l'une des revendications 4 à 6, caractérisé en ce que la pièce intermédiaire (16) est réalisée sous forme de partie de positionnement reliée ou pouvant être reliée à l'un des éléments de combustible (5 respectivement 5a).
  8. Agencement de stockage selon l'une des revendications 2 à 7, caractérisé en ce que le bâti de stockage supérieur (1a) est réalisé avec une plus petite dimension en hauteur (H1) que le bâti de stockage inférieur (1), en ce que les éléments de combustible supérieurs (5a) sont disposés chacun individuellement dans une gaine (19) reliée à l'élément de combustible concerné (5a) en un matériau absorbant les neutrons, et en ce que ces gaines (19) sont réalisées de telle manière qu'elles s'adaptent dans les canaux (4a) du bâti de stockage supérieur (1a) et peuvent être installées d'une manière mobile dans la direction verticale.
  9. Bâti de stockage pour un agencement de stockage selon l'une des revendications 1 à 8, caractérisé en ce que la construction d'appui (2) pouvant s'appuyer sur le fond du bassin de stockage est réalisée sous forme de sommier (17) subdivisant les canaux (4) qui constitue au moins par un nombre partiel de ces canaux (4) respectivement au moins un agencement de guidage (18) pour l'une des pièces de support (14, 14') déplaçable verticalement.
  10. Bâti de stockage selon la revendication 9, caractérisé en ce qu'un nombre partiel des pièces de support (14') sont reliées au sommier (17) par des moyens d'appui (22) par lesquels le sommier (17) prend appui sur ces pièces de support (14').
  11. Bâti de stockage selon la revendication 10, caractérisé en ce que les moyens d'appui (22) comportent chacun une liaison ajustable en hauteur entre la pièce de support concernée (14') et le sommier (17).
EP96810541A 1995-08-21 1996-08-14 Dispositif de stockage d'assemblages de combustible nucléaire et râtelier de stockage correspondant Expired - Lifetime EP0759623B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96810541A EP0759623B1 (fr) 1995-08-21 1996-08-14 Dispositif de stockage d'assemblages de combustible nucléaire et râtelier de stockage correspondant
ES96810541T ES2143744T3 (es) 1995-08-21 1996-08-14 Instalacion de almacenado para conjuntos de combustible nuclear y bastidor de almacenado correspondiente.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP95810523 1995-08-21
EP95810523 1995-08-21
EP96810541A EP0759623B1 (fr) 1995-08-21 1996-08-14 Dispositif de stockage d'assemblages de combustible nucléaire et râtelier de stockage correspondant

Publications (2)

Publication Number Publication Date
EP0759623A1 EP0759623A1 (fr) 1997-02-26
EP0759623B1 true EP0759623B1 (fr) 2000-02-02

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ID=26140698

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Application Number Title Priority Date Filing Date
EP96810541A Expired - Lifetime EP0759623B1 (fr) 1995-08-21 1996-08-14 Dispositif de stockage d'assemblages de combustible nucléaire et râtelier de stockage correspondant

Country Status (2)

Country Link
EP (1) EP0759623B1 (fr)
ES (1) ES2143744T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2205974B1 (es) 2001-05-24 2005-05-01 Equipos Nucleares, S.A. Bastidor segmentado de matriz celular entrelazada, para almacenar combustibles provenientes de reactores nucleares.
EP2146352B1 (fr) 2008-06-19 2014-01-08 Cci Ag Râtelier de stockage pour assemblages de combustible nucléaire

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042828A (en) * 1975-11-17 1977-08-16 Nuclear Services Corporation Rack for nuclear fuel elements
US4187433A (en) * 1977-08-05 1980-02-05 Automation Industries, Inc. High density fuel storage rack
FR2462767A2 (fr) * 1978-08-12 1981-02-13 Babcock Brown Boveri Reaktor Chassis d'entreposage d'elements combustibles de reacteur nucleaire
ES489024A0 (es) * 1979-04-23 1981-02-16 Sulzer Ag Perfeccionamiento en las armaduras para el almacenamiento dehaces de elementos combustibles nucleares
DE8133276U1 (fr) * 1981-11-13 1987-08-27 Alkem Gmbh, 6450 Hanau, De

Also Published As

Publication number Publication date
EP0759623A1 (fr) 1997-02-26
ES2143744T3 (es) 2000-05-16

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